IR-transparent glassy materials based on halides of group I–IV elements

Abstract

This paper addresses the preparation, purification (removal of oxygen containing impurities), and applications of fluoride glasses, with particular attention to the preparation of modified glasses for extending their transmission window.

Bandwidth enhancement of MIR emission in Yb3+/Er3+/Dy3+triply doped fluoro-tellurite glass

“…However, Ln 3+ ions are known for their narrow emission band widths of typically 100-150 cm −1 but possess very high average peak powers. Ln 3+ doped MIR transparent fluoride [1,[7][8][9][10][11][12] and chalcogenide [1,2,13,14] based glasses are widely explored for their MIR emission properties, nevertheless, these glasses are known for their poor chemical, thermal and mechanical stability than oxide glasses. In the current decade, much progress evolved on the low phonon (~750 cm −1 ) tellurium oxide based glasses and even fibers are commercially available which are transparent up to ~5 µm [15].…”